Finding the Fourth Proportional to 7,904.32, 10,907.84 and 5,109.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,904.32 : 10,907.84 = 5,109.76 : x
2. Step 2: Convert to fraction form
   7,904.32/10,907.84 = 5,109.76/x
3. Step 3: Cross multiply
   7,904.32x = 10,907.84 × 5,109.76
4. Step 4: Simplify right side
   7,904.32x = 55,736,444.52
5. Step 5: Solve for x
   x = 55,736,444.52/7,904.32
6. Step 6: Final answer
   x = 7,051.39